Manufacture of bags



- Feb. 4, 1936. T. M. ROYAL MANUFACTURE OF BAGS Filed July 28, 1952 2Sheets-Sheet l Feb. 4, 1936. I ROYAL 2,029,340

MANUFACTURE OF BAGS Filed July 28, 1932 2 Sheets-Sheet 2- CO YER PA PERCELLO NANE mvcu'Tozr Thoma-s MfRo qal,

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vith v Patented Feb. 4, 1933 PATENT "OFFlCE. 7

MANUFACTURE OF BAGS Thomas M. Royal,

Philadelphia, Pa.

Application July 28, 1932, Serial No. 625,37?

10 Claims. (01. 93-355 My invention relates to the manufacture of bagsand similar containers of paper and similar material and comprises animproved method." of

and means for preparingor associating a plurality of individual webs ofpaper or similar material subsequently developed into tube formation inbag-making machines; the tube or tubes thus formed being severed intoblanks of any predetermined and uniform length, which blanks are passedthrough bottoming mechanism and are finally delivered as finished bags.A further feature of my invention is the development of a special typeof tubular blanks from a'plurality of webs or plies of paper or similarmaterial.

In the manufacture oi paper bags for packaged goods it is commonpractice to print upon the paper web from which such bags are producedindicia representing the contents of the bag'or package, the name of thedealer or-proprietor, trade-mark data, etc., etc., such printed matterbeing applied successively to such web in spaced relation, so that whena printed web is subse-' quentlyrun through a bag-making machine andformed into a tube from which bags are subsequently finished, unitblanks may be cutfrom such tube in properly spaced relation with respectto'such printed matter and subsequently formed into bags. l'his is wellknown practice and millions of bags are made in this manner, includingmany types of lined bags which, besides serving to keep the contentsrelatively fresh, prevent the staining of the outer or cover. sheet orweb of the bag or package with essential oils present in the goodscontained therein.

In the printing of what may betermed the outer or cover portion of thebag or package it is necessary, unless very fast drying ink is employedand the use of the same presents objec=- tions difilcult to overcome, toprovide what is known as a slip sheet; usually a sheet of such nature asto prevent a set-off of the printed sur-. face upon the back of theprinted web, and this sheet is 'wound with the printed web and overliesthe printed surface of the same. Wh'ena roll of the printed web was tobe presented to the bag-making machine, it was necessary to remove theslip sheet and in practically all instances, after the ink has dried,the printed sheet is rero1led for the purpose of removing the slip 0sheet, which is also rerolled; on a separate mandrel for further use. Asmay be readily understood, this operation increases very materially. theamount of. work necessary to transform the printed sheet or web intobags.

[5 At the present time there is a demand for graminatic in character, inwhich:

. packages enclosed in "Celphane, usually thatof the waterproof type,with a view of not only preserving the freshness of the packagedcontents, but of making the package more attractive. Some attempts havebeen made to carry a web 5 of Cellophane through the bag-making machinealong with the printed web, but many difficultie have been encounteredwhich-preclude the satisfactory manufacture of bags when attempts aremade to associate three separate webs; 10 the cover paper; the thinfCelIophane" sheet lying on top of the same, and the bag lining paperdisposed on the opposite or inner side of theprinted web, and pass themthrough a bag-making -machine.

My invention comprises employment of a sheet of Cellophane, which mayform the outer and transparent layer or ply of the finished bag and/ orpackage, and the permanentassociation of the same with the printed webwhich, heretofore,

has usually been the outer wall or ply of a lined bag. The web or ply of"Cellophane" is presentedtothe printed web asthe latter is wound upon amandrel or core and overlies the printed surface indirect contact withthe printing ink. In some instances the ink may be sufiiciently adhesiveto insure such permanent contact of the Cellophane with the printedsurface as to preclude the necessity of otherwise securing these twowebs together or, if desired, suitable areas so of the printed webbeyond; the printed portion thereof may be coated' with adhesive so asto insure proper and permanent engagement of the web of Ce1l0phane"therewith. 'I'hesame effect maybe accomplished by supplying the ink with36 an adhesive ingredient.

"The several features of my invention are more fully referred tohereinafter; reference being had to the accompinying drawings, more orless dia- 4 0 Figure 1 is a diagrammatic view of means which may beemployed for forming a compound -web from which bags may be formed; suchweb consisting of a printed ply of paper to constitute.

the body of a bag and a sheet or plyof "Cellophane which -'is associatedwith theprinted ply of paper. and formsa transparent cover for the fims'hedb'ag. w

Fig. 2 is a perspective view illustrating the manner in which the web ofpaper and the 'web of Celloph'ane" are rolled together. Fig. 3 is anenlarged sectional view of a duplex .web of bag-making materialcomprising the paper 1 ply and the sheet-or ply of Cellophanef.

Fig. 4 is a view similar to Fig. 3, showing a 5 heet of Web.

Fig. isan enlarged sectional view of the wall .at the open end of atubular blan'i'made from 5' the duplex web and subsequently formed intoa vals corresponding to the length of bag blanks-- formed from thetubular structure into which the I bag. 3

Fig. 6 is'a similar view illustrating a sheet of "5 ns materialassociated with the duplex-web.

'Fig. 7 is a cross 'sectional-\view of a vdouble,-

accordance with my invention, and

Fig. 8 is a perspective view of a package formed from a bag or containermade from a triplex webs.

developed inaccordance with my invention.

i In maldng the cbmbined webcompri'sing the sheet or ply of bag bodypaper and the sheet or ply of Cellophane constituting the cover or wrapit is desirable to join these webs togetherat interr' duplex web isshaped in the bag-forming machine.

Various ways of securing the plies of the duplex web together may beemployed; the adhesive may i 1o walled tub'efrom which bags maybe madein be applied over successive areas corresponding to the blank lengthsin spots at regular, or irregular intervals, or" in parallel lines oversuch areas. or

in other ways. I prefer, however, to connect these plies orwebs'together by'broad or relatively in the drawings; I represents aroll of bag paper broadb ds of adhesive disposed at regularly sucto beprinted. ,This maybe passed over guide ceeding rolls 2 and 3, and over aplaten roll 4, associated with'printin'gmeans of single or multipletype, depending upon the number of colors appliedpand thence to e core 5upon which such paper'in its printed condition is rewound. Any suitableform or printing meansmay be employed, the printing rolls beingindicated at 6. Under usual circumfrom which a bagis made.

condition facilitates use of the bag when stances in-the practiceheretofore followed, the

"'25 core =5 receives the printed web or sheet and a second web orsheet; the two webs or sheetsbeing 8'0 .volutions wound therewith.

wound togetherhnd the second sheet separating the printed surface of theprinted web from the back of the same throughout the successive con- Incarrying out my invention I employa web or sheet of Cellophane indicatedat l0 as the "second sheet or web, and such Gellophane web may bedelivered from a roll I i. The web 3'5 or sheet of Cellophane" is woundwith the printphane is permanentaly associatedwith the ed web or sheeton the core 5 in -a manner substantially indentical with the use of slipsheets. heretofore employed; excepting that the Cello- 40 printed web orsheet. For this purpose the printed' web may be providedwith areas ofadhesive applied at regular intervals; suitable means of a type wellknown in the art being arranged 'to- 'apply such adhesive to the surfaceof the printed 45. web beyond or adjacent to or as part of the printedportion thereof. As is well known such means inthe printing ink-andapplied to predetermined portions of the web as certain parts of the inumay comprise the use of an adhesive supplied '50 dicia are printedthereon; the use'of an ink which is of itself suitably adhesive; oradhesive alone may-be applied to predetermined parts of the web in anysuitable and well known manner. The compound web consisting of the paper5 cover sheet or sheet withthe imprint thereon and the, .Cellophane" webor sheet which serves as the protector for the printed surface, maythen, be removed from the printing and winding mechand introduced intoproper position with respectto a bag-making machine whereby bags with orwithout-the addition of the liner'inay be produced.

Fig. '2ishows the manner; in which the Cello phane web or sheet isassociated with the printed web. These webs or sheets are of substan-'tially the same width andwhen rolled together they," are guided ordirected so as to overlap J70 viding for the securin of the bag, asindicatediii Fi '7; lines or areas of suitable adhesive being applied tothe surface of .the respective plies atone side'or' edge of the 75 same,at a 'andbf.

bag will presents substantially l5 rvals as indicated at :r, in Figs. 2,8,

employed) will be iri permanent contact and present single edges at theopposite ends of the blank Additionally, such colorless cementitiousmaterial capable of,

forming the desired function, or such adhesive may be combined with inkso that the broad connecting bands are in the nature of ornamentationapplied to the bags as part of or associated with the printed matterapplied thereto as indicating the contents of the bagadvertising matter,etc.

By having complete or substantially complete bands of adhesive appliedto the compound web for the purpose of securing the plies of the sametogether at bag length intervals, the tubes made from such compound websare more readily cut into the desired blanks inasmuch as the severingengaged, and a cleaner cutris insured.

The securing of the twosheets or webs together, onev of which may beCellophane, by

the bands of adhesive disposed at bag length intervals is of furthervalue in connection withv the appearance. of the bag inasmuch as the"Cellophane appears in theflnished package as a-ilnal covering orwrapper and not as a mere glazing, or

varnishing of the ply which may be termed the bodyiweb.

While the securing together-of the separatewebs or plies may. beeifected by other means than the broad bands of adhesive, they are particularly ,desirable in view of the type of bag emf ployed inasmuch asthe wallportions engaged by the adhesive at one end of the be folded *inwhen the bag isfilled, and. such portion may be fully folded in with thebottom fer-i.

mationi I If and when a liner v formation'oi a bag, this may be arrangedto pro ject at one side'of themultiple plies so as t6 be secured at-theseam portion of the finished bags-'- paste-being applied to such or notas may be desired The zones of contact providedby the adhesive "betweenthe ply of -b paper and the transparent outer cover are relatiively wideand the tube is severed into blanks by transverse cutting .means passingthrough such zones at some point inte mediate 'the termini oftheir arealengthwise of the blank so-that the open end of-the finished a singlewall;

ply is employed in the j improved composite web and a liner, in which'Arepresents the outer'enclosure of Cellophane,-

and B the usual printed cover paper of the package or bag; these twolayer'sconstituting the compound web which may be secured together bythe broad bands of adhesive such as indicated at 2:. The liner sectionforming the inner layer l or ply of the wall'is shown at C.'

products to be packaged substantially in the manner indicated do notcontain suflicient oily constituents to stain the wrapper, and with suchproducts it may be possible to employ bags without a liner.

While in some instances ordinary Cellophane may be employed withentirely satisfactory results, I prefer to employ .Cellophane-' of thewaterproof type, designed to produce a substantially waterormoisture-proof package; such Cellophane enclosure additionally. servingto protect the contents thereof and maintain its freshness, besidesgiving an ornamental appearance or finish.

. While I have illustrated a particular embodiment of my invention itwill be understood that I do not wish to be limited to the exactarrangement disclosed and that modifications thereof may be made withoutdeparting from the spirit of my invention and the scope of the appendedclaims. r

I claim:

1. In the preparati'onof multi-ply webs for the manufacture of multiwallpaper bags, producing a printed web in continuous lengths, associatingtherewith a' web of transparent material in con-' tinuous lengths and indirect contact with saidprinted surface, and causing said transparentweb to be maintained in fixed position with respect to said printed webfor subsequent formation into multiwall bags by the application ofadhesive to said printed web prior to the association therewith of thetransparent web; said webs being laterally spaced with respect to eachother with tinuous le ths and in direct contact with said paper webprojecting beyond the adjacent edge of the transparent web and one edgeof the trans-.

' parent web projectingbeyond the adjacent edge of the paper web. a

3. In the manufacture of multiwall pap r bags.

the step of producing multi-ply material from which such bags are made,which consists in passing a web of material in continuous lengths incontact with an impression 6r surface, reeling said web after theprinting operation, providing said printed surface with adhesivematerial, and associating with saidadhesively prepared printed surface acontinuous web in contact with an impression or printing surface,reeling said web after the printing operation, providing said printedsurface with adhesive material simultaneously with the printingoperation, and associating with said adhesively prepared printed surfacea continuous web of trans- I parent material for permanent engagementwith said printed surface; said transparent web being reeled with theprinted web and said webs being laterally spaced'with respect to' eachother with one edge of the paper web projecting beyond the adjacent edgeof the transparent web and one' edge of the transparent web projectingbeyond the adjacent edge of the paper web.

5. In the manufacture of paper bags, means for printing a continuous webof paper, means for applying broad bands of adhesive to said printed.surface, means for directing a continuous web of "Ce1lophane intointimate contact with the,

printed-surface and said bands of adhesive for{ permanent associationwith said printed web, and

a v passing a web of material in continuous lengths It will beunderstood, of course, that many,

means for simultaneously :reeling together said laterally spaced withrespect to each other with one edge of the paper web projecting beyondthe adjacent edge of the Cellophane web and one edge of theCellophane"-web projecting beyond.

the adjacent edge of the paper web. 6. The method of making multi-ply'webs for use in the manufacture of multiwall bags, which comprisescontinuously printing a web of paper,

passing the same to a core or mandrel upon which it is wound, andsimultaneously winding therewith a web of transparent material; 'saidtransparent web being permanently attached to the printed web over theprinted matter thereon and said webs being laterally spaced with respectto each other with one edge of the paper web projecting beyond theadjacent edge of the transparent web and one edge of the transparent;web

projecting beyond the adjacent edge of the paper 1 web.

7. The method of making multi-ply webs for use in the manufacture ofmultiwall bags, which comprises continuously printing a web of paper,

applying areas of adhesive at regularly succeeding intervals inassociation with the printed matter, passing such prepared web to a core0'; man- 'drel upon which it is wound, and simultaneously windingtherewith a web of transparent "matethe adjacent edge of the transparentweb and one edge of the transparent web projecting beyond the adjacentedge of the paper web.

. 8. The method of making .multi-ply webs for use in the manufacture ofmultiwall bags, which comprises continuously printing a web of paper,

passing the same to a core or mandrel upon which it is wound,simultaneously winding therewith a web of Cellophane, and permanently Vottechlns W, printed over thereom said Cello-'- phanef web forming a touter sheath for bags produced from said multi-,ply web and said websbeing'laterally spaced with fespect'to h each other withtone edge ofthepaper web pro- 1 jecting beyond theadiacent edge otthe Cello- I phaneweb and one edge oi! the Cellophane web projectingbeyond the adjacentedge of the paperwe'bl V 9. The 'method. of making multi-ply. webs !oruse in the manui'actm'e of multiwall bags, which cbmprises continuouslyprinting a web otpaper, applying areas 10! adhesiveat regular intervalsin-a'ssociation withvthe printed matter, 1 such prepared web to a'coreormandrel upon which it is wound, simultaneously winding there .with awebor "Cellophane, and permanently attaching said "Cellophane web to theprinted web over the printed matter thereon bysuch 9,039,346 a a I web"adhesive; said "Cellophane" web forming a transspaoed with respect toeach other with one" edge otthe'paper" web-projecting beyond the adia-tcent edge oi! ,the #Cellophane web and one edge of the.Cellophanef webprojecting beyond the adjacent edge oi! the x I -10.- Themethod ofmulti-p y websfol 1 use in the manufactured mmtiwall bags, which.

comprises continuouslyprinting a web 01 paper,

each other to provide single ply projectims-at opposite edgesof theinulti-ply web parent outer sheath for bags produced from .ngulti-plyweb and said webs being laterally moms guana 2o;

